Currently...

Foal Stat Calculator

I've finally managed to work out the breeding formula, so as promised here is a calculator that can accurately predict the stats of a foal when given the parents' base stats, stats at the time of breeding, and discipline. To use it, click the link below, enter the details of the sire and dam, then click 'Calculate'.

I've thoroughly tested it and I'm confident it works for every type of breeding, but if you see any discrepancies please let me know by posting here. Likewise, if you see any other issues or bugs, have a question, or would like to suggest a feature for a future version, please post it here and I'll help you out.

Frequently Asked Questions

Where do I find the base stats?
These are located at the very bottom of a horse's page, next to the private notes. Unfortunately only the owner can see them, so if you're using an outside stud or brood you'll have to message the owner to get these.

What's the breeding formula?
Details of the calculations used can be found here, including some tips for how to get the best stats in your foals.

What other foal calculators exist?
I have also made a foal genotype predictor. A foal conformation calculator does not yet exist.

Just some interesting stats about the calculator...
- This was made using Javascript and HTML.
- It consists of over 300 lines of code.
- Nearly 100 breedings were examined in order to determine the breeding formula. (There was a lot of trial and error!)

@Smokey
Yes. You need to put in all numbers otherwise it can't perform the calculation. If you don't have the base stats you can either message the owner to get them or take an educated guess to get an approximate prediction. Foundations have approximately 20 stats in each of their base stats, but all other horses can be literally anything, so guessing won't be reliable for them.

@MythicalSis
Base stats are a significant contributor to the stats of the foal. You can see the exact breeding formula here, but as an example, consider these breedings:

Let's say you have a mare that you intend to breed, who has the following stats:
Mare base stats: 20, 20, 20, 20, 20
Mare stats now: 500, 20, 20, 20, 500

You've found two suitable studs, both of which have the same stats:
Stallion stats now: 500, 20, 20, 20, 500

Birth stats are generally much higher than base stats, except in foundations, where they are the same. Base stats are what contribute to breeding, along with a horse's current stats. Birth stats don't really do anything. It's just something interesting to note if you keep track of a horse's progress.